Aeroplane construction.



A, JANOWSKI. AEROPLANE CONSTRUCTION. APPLICATIONTILED APR. 13. I916- 1,204,989. Y 1 Patented Nov. 14,1916.

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AEROPLANECONSTRUCTION. APPLICATION FILED APR. 13/1916.- 1,204,989. Patented N0v. '14,-1916.

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AEROPLANE CONSTRUCTION. APPLICATION mm APR. 13, ms.

Patented Nov. 14,1916.

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UNITED STATES PATENT *oFFIoE.

ANTHONY JANOWSKI, OF HAZLETON, PENNSYLVANIA.

- AEROIPLANE, CONSTRUCTION.

To all whom it may concern Be it known that I, ANTHONY J ANOWSKI, a citizen of the" United States of America, residing at Hazleton, in the county of Luzerne and State of Pennsylvania, have invented certain new and useful Improvements in Aeroplane Construction, of .which the following is a specification.

This invention relates to new and useful improvements in aeroplane construction.

The primary object of the invention is the provision of an adjustable equilibrator adapted for shifting as occasion requires due to the change in position of the load carriedby the aeroplane.

A further object of the device is the provision of-an aeroplane specially adapted for transferring passengers such as soldiers from a vessel to the shore and being arranged with a stabilizing propeller manually shiftable longitudinally of the aeroplane while the same is in motion.

The present arrangement .provides an aeroplane having a forward propeller and a stabilizing propeller positioned above the aeroplane both being driven from a single motor. the stabilizing propeller being manually shiftable' for equalizing the load carried by the device and being so shiftable either when the motor is at ,rest or in operation.

With these general objects in view and others that will appear as the nature of the invention is better understood, the same consists'in the novel combination and arrangement of parts hereinafter fully described,

illustrated in the accompanying drawings and then claimed.

In the'drawings forming a Part of this application and in which like designating characters refer to corresponding parts throughout the several views :Figure 1 is a side elevation of an aeroplane provided with the present device, the passenger boat being illustrated by dotted. lines in its detached position and the folded brackets therefor being similarly shown. Fig. 2 is a top plan view thereof; Fig. 3' is an enlarged side elevation of the stabilizing propeller with its shifting and operating mechanism,

parts being shown in section. Fig. 4 is an end elevation thereof with parts broken l away, Fig. 5 is a longitudinal sectional view-through an .end portion of the equaliz'er propeller frame;

Thestabilizing device herein set forth is Specification of Letters Patent.

Patented Nov. 14', 1916.

Application filed April 13, 1916. Serial No. 90,892.

adaptable for different forms of aeroplanes frame 10 by means of foldable brackets 15 having detachable engagement with perforated lugs 16 provided in pairs forwardly and rearwa'rdly of the said boat. The boat is readily detached from the brackets 15 when desired, the members of the brackets being then readily folded beneath the frame 10, as illustrated by dotted lines in Fig. 1 of the drawings.

A motor 17 is arranged forwardly of the frame 10 and has its power shaft 18 provided with an operating propeller 19 whereby the aeroplane ispropelled through the air, the said shaft 18 having a rear end portion or extension 19 journaled at its free end in a boss 20 of a centrally arranged upright post 21 of the aeroplane frame.

A beam 22 rectangular in cross section is arranged transversely of the frame 10 being propeller shaft 25 is vertically journaled centrally through the beam 22 and extends therebeneath having its free lower end journaled in a housing 26 slidably mounted upon the said power shaft extension 19. A connecting brace 27 is vertically arrangedbetween the housing 26 and the beam 22. A pinion 28 is slidably splined upon theshaft 19-and arranged within the housing 26 at an interrupted lower portion thereof, the said housing being substantially rectangular with an interrupted portion adapted for-the accommodation of the said pinion. The lower free end of the shaft 25 is provided with a gear 29 within the housing 26 in constant mesh with the pinion 28. Transverse shafts 30 and 31' are arranged respectively forwardly and rearwardly of the beam 22 being provided with sprocket wheels 32 on each of their opposite ends, the respective sprocket wheels upon each side of the frame 10 being connected together by a sprocket chain 33. An upright post 34 is arranged upon the floor 35 of the aeroplane frame 10 and IS provided with a turning crank 36 journaled in the top thereof, a dog and ratchet 37 being carried by the said post for maintaining the crank in its adjusted positions. handle 38 is provided for the crank 36 while a sprocket Wheel 39 is mounted upon the said crank being connected by a sprocket chain 40 with a similar sprocket wheel 41 carried by the forward transverse shaft 30. A propeller or wheel 42 is carried by the upper end of the shaft 35 which is adapted to be revolved by the motor 17 through the agency of the shaft 25, gear 29, pinion 28 and the motor shaft end portion '19.

From this detailed description of the invention, the complete operation thereof will be at once apparent, the arrangement ofthe passenger boat 14 having been heretofore described. Each of the sprocket chains 33 which have a substantially horizontal movement are connected at a single point to an outwardly projecting pin 43' of the end I plates 24 of the beam 22. When the weight or load within the boat 14 becomes over' balanced in one end thereof, the crank handle 38, is manually turned for longitudinally shifting the sprocket chains 33 and thereby sliding the beam 22 along in the desired direction upon the rods 23, the

housing 26 being simultaneously moved in a corresponding direction'slidably upon the shaft extension 19, the longitudinal passage or opening 44 through the housing 26 freely allowing this movement of the shaft, which movement is also permitted by the engaging spline 45 upon which the pinion 28 is arranged. The beam 22 with its stabilizing propeller 42 may be thus shifted longitudinally of the frame 10 whenever required and without interrupting the operation of the motor 17 or the main propeller 19. The safety of the air craft is thus greatly in creased better adapting the aeroplane for passenger service. A transverse forward plane 46 is arranged upon "the frame 10 while the rudders 12 may be shifted by means of the steeringcords 47.

While the form of the invention herein shown and. described is what is believed to be the preferred embodiment thereof, it is nevertheless to be understood that minor changes may be made in the form, proportion and details of construction without departin from the spirit and scope of the invention as hereinafter claimed.

What I claim as new is 1. An aeroplane comprising a frame having side rails, a beam slidably positioned manually operated shifting means for the said beam, a stabilizing propeller carried by the said beam, and power means for the said propeller operablesimultaneously with the adjusting of the said beam.

2. An aeroplane provided with a motor having a power shaft extending in opposite directions, a main ropeller upon the forward end of the said shaft, a housing slidably mounted upon the rear ortion of the said shaft, a pinion within said housing splined upon the said shaft portion, a stabilizing propeller having its shaft journaled through the said housing, a ear upon the free end of the said stabilizing propeller shaft in constant mesh with the said pinion, and shifting means for the said housing and stabilizing propeller.

3. An aeroplane rovided with a motor having a power sha extending in opposite directions, a main propeller upon the for- .ward end of the said shaft, a housing slidably mounted upon the rear portion of the said shaft, a pinion within said housing splined upon the said shaft portion,a stabilizing propeller having its shaft journaled through the said h'ouslng, a gear upon the free end of the said stabilizing propeller shaft in constant mesh with the said pinion, .a beam arranged transversely of the aeroplane and through which the said stabilizing propeller shaft is journaled, a connecting brace between the said housing and beam, mounting rails for the said beam, and manually operable chain and sprocket shifting means for the said beam. I

4. An aeroplane comprising a frame having parallel upper side rails, a motor within said frame, a power shaft for the said motor rearwardly extending substantially centrally of the frame, a beam slidably ar- 100 ranged upon the said rails, a substantially rectangular housing slidably arranged upon the said shaft and having an interrupted side portion, a pinion within the said interrupted side portion of the housing splined 105 upon the said shaft, a vertical connecting brace between the said beam and housing,

a stabilizing propeller member having its shaft vertically arranged, journaled through the said beam and housing and operatively 110 connected to the said pinion and means adapted for shifting the said beam longitudinally of the said frame during the operapeller member.

' In testimony whereof affix my signature.

ANTHONY JANOWSKI. 

